Extreme rainfall was defined as the daily rainfall total of 1% Probability of exceedance (Pe) equivalent to 1 in 100 year average recurrence interval. This was calculated using the Generalised Extreme Value (GEV) theory using the Bureau of Meteorology operational gridded rainfall data originally developed as part of the Australian Water Availability Project (AWAP). Station data from the Australian Bureau of Meteorology's observation network were also used to calculate 1% Pe and for intercomparison between gridded and observed values. Work is currently underway on trend analysis using Extreme Value Analysis (EVA). This presentation will focus on the results from the GEV and EVA trend analysis of extreme rainfall on the eastern seaboard of Australia and its relationship with east coast lows.
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Dowdy, A., Mills, G., and Timbal, B., 2011. "Large-scale indicators of Australian East Coast Lows and associated impacts.", CAWCR Technical report, 37, pp104.